B:-1000 Nm
C:-2500 Nm
D:-5000 Nm
Correct Answer:- Option-D
Question87:-Which among the following substance is most elastic ?
A:-Steel
B:-Rubber
C:-Brass
D:-Aluminium
Correct Answer:- Option-A

Question88:-When a body executes simple harmonic motion there is always a constant ratio between the displacement of
mass and

A:-Velocity
B:-Acceleration
C:-Frequency

D:-Time period

Correct Answer:- Option-B

Question89:-A closed coil helical spring of stiffness 30 N/mm is arranged in series with another such spring of stiffness 60
N/mm. The stiffness of composite unit is

A:-30 N/mm
B:-45 N/mm
C:-10 N/mm
D:-20 N/mm
Correct Answer:- Option-D
Question90:-The diameter of a shaft is increased from 30 mm to 60 mm and other conditions remain same, how many times
its torque carrying capacity increases
A:-2 times
B:-4 times
C:-8 times
D:-16 times
Correct Answer:- Option-C
Question91:-The back staff reading on a B.M. of R.L. 100.000 is 2.685 m. If foresight reading on a point is 1.345 m, the RL of
the point is
A:-102.685
B:-101.345
C:-101.340
D:-104.030
Correct Answer:- Option-C
Question92:-An imaging line joining the points of equal elevation on the surface of the earth is called
A:-Contour gradient
B:-Level line
C:-Contour surface
D:-Contour line
Correct Answer:- Option-D
Question93:-Bulking of sand is caused due to
A:-Surface moisture
B:-Air voids
C:-Clay contents
D:-All the above
Correct Answer:- Option-A
Question94:-Long column is one which has ratio of effective length and least lateral dimension
A:-Less than 15
B:-Greater than 15
C:-Less than 20
D:-Greater than 20
Correct Answer:- Option-B
Question95:-Apparatus used to test soundness of cement is
A:-Vicat's apparatus
B:-Vee bee consistometer
C:-Lechatelier apparatus